Electric plug connection.



No. 815,764. PATENTED MAR. 20, 1906.

J. C. TOURNIER.' ELECTRIC PLUG CONNECTION.

APPLICATION PI-LED JULY 1l. 1904.

Witnesses.

- Inventor.

` Julius C Tournier a by lIo

UNiTn'D STATES 4-Piirrnivr l onirica.

J ULIUS C. TOURNIER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERALELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELECTRIC PLUG CONNECTION.

Specification of Letters Patent.

Patented March 2o, 1906.

Application filed July 11, 1904. Serial No. 215,999.

' To a/ZZ whom it mafyeoneegn:

ectady, county of Schenectady, State of New i 5 York, have inventedcertain new and useful l Improvements in Electric Plug Connections,

of which the following is a specification.

This invention relates to plug connections for electric circuits inwhich one terminal consists of a screw-threaded metallic sleeve by meansof which the plug is secured in a screwthreaded socket.

The obj ect of the invention is to provide a stronger support forsaidsleeve and to insulate it more edectually from the central bolt, whichconstitutes the other terminal.

The novel features of the invention are a washer of insulating materialand an internal' flange at the inner end of the sleeve which is tightlyclam ed between said Washer and the end of the p ug.

, In the accompanying drawings, Figure 1 is a side elevation of afuselug embodying my invention. Fig. 2 is a ongitudinal central sectionof the same. Fig. 3 is a view-of the outer en dwith the cap removed.Figf is a 4view of the inner. end. Fig. 5 is a similar view with thewasher and central bolt, and Fig. -6 is a central longitudinal sectionof an attaching-plug embodying the inventidn.

The body l and cap 2 are made of insulating material, referablyporcelain, and are fastened toget er by a screw 3. The body has anintegral shank 4 of reduced diameter,

over which is slipped the metallic screwthreaded sleeve 5, which abutsat one end against the body -1. The inner end of the sleeve has anlinternal flange 6, which abuts against the inner end of the shank and isheld in .place by a Washer 7, of porcelain or the like, through whichpasses the bolt 8, having a head 9 supportin the washer. The boltextends longitudina ly through the sh ank and body of the plug, and inFigs. 1 to 5 it is s lit at its outer end to receive one end of a seV10, the outer end of which is fastened to a the end of the 11, whichhas a bent end 12 passing through the flange 6 anden aging with adepression I3 therein, being he d in good electrical co'ntact therewithby the washer. In Fig. 6 the bolt screws into a conducting-strip 14. Itwill be noticed that' the end of the sleeve is separated from the headof the bolt by a considerable width of insulating material, so thatdanger from short-cirouiting is lessened.

The details of construction may be somewhat varied to suit differentrequirements, as

illustrated in the two modifications shown.

'What I claim as new, and desire to secure -by Letters Patent of theUnited States, is

1. An electric connecting-plug having a bodyof insulation, a metallicscrew-threaded sleevevsurroundingfsaid body and having an internalflange overlapping the end of said body, and an insulating-Washersmaller in diameter than said sleevepla'ced against the end of said bodyand clamping said flange thereto.

2. The Acombination with an insulatingbody having a cylindrical endportion, of a screw-threaded metallic.sleeveinclosing said end portionandhaving an internal flange at one end abutting against the end of saidbody, a washer of insulation smaller in diameter than said sleeve, and alongitudinal bolt holding said washer against said flange.

8. In an electric connecting-plug, the combination with a body ofinsulation, of an eX- ternal metallic screw-threaded flanged sleeveforming one terminal, a central bolt forming the other terminal andhaving a head, anda Washer of insulation smaller in diameter than saidsleeve held by saidhead against the 'liange on the slreve and clampingit against In witness Wliereof I have hereunto set my hand this 8th dayof July, 1904;.

JULIUS C. TOURNIER.

Witnesses:

BENJAMIN B. HULL, bllintnrr Carosi.

